Yes. It's the ratio of 605 to 1,000, or 121 to 200.
Any number that you can write completely on paper using digits,
and a decimal point or a fraction bar if you need them, is rational.
yes
Yes.
yes
It must be a generalised rational number. Otherwise, if you select a rational number to multiply, then you will only prove it for that number.
Yes. Any rational number divided by another rational number is also rational.
For a number to be divisible by another number it must be at least that number. As 3 is less than 605 it cannot be divisible by 605. Also 3 is not a FACTOR of 605, that is 3 does not divide into 605 without remainder.
No, 605 is not a prime number. It is divisible by 5 and 11, among other factors.
4,840 / 8 = 605
It is a rational number. It can be written as a fraction.
yes
Yes.
Is 12.05 a rational number or irrational number?
1.96 is a rational number
It is a rational number, as it can be written as a fraction.
Yes, the sum is always rational.
There is no such thing as a number that is both rational and irrational. By definition, every number is either rational or irrational.
As much as, in these days of uncertainty, anything can be anything. As long as the constraints of a rational number are kept to, a rational number will always remain a rational number.